CVE-2018-19974

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Source
https://cve.org/CVERecord?id=CVE-2018-19974
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-19974.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2018-19974
Downstream
Published
2018-12-17T19:29:01.080Z
Modified
2026-05-30T10:51:31.397747Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

In YARA 3.8.1, bytecode in a specially crafted compiled rule can read uninitialized data from VM scratch memory in libyara/exec.c. This can allow attackers to discover addresses in the real stack (not the YARA virtual stack).

References

Affected packages

Git / github.com/virustotal/yara

Affected ranges

Type
GIT
Repo
https://github.com/virustotal/yara
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
309894830a5f9ff8cc22155d7719ea608de7bc9d
Database specific 
{
    "cpe": "cpe:2.3:a:virustotal:yara:3.8.1:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "3.8.1"
        }
    ],
    "source": "CPE_STRING"
}

Affected versions

v2.*
v2.0.0
v2.1.0
v3.*
v3.0.0
v3.1.0
v3.2.0
v3.3.0
v3.4.0
v3.6.0
v3.7.0
v3.8.0
v3.8.1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-19974.json"